Railway-switch.



No. 703,772. Patented July I, 1902. s. A. DUVALL.

RAILWAY swncn/ (Afiplication filed Apr. 17, 1901.) (No Model.) 2 Sheets-Sheet I.

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ArnNr STEPHEN A. DUVALL/OF PE NRITH, VEST VIRGINIA.

RA] LWAY- SWITCH.

SPEQIFICAT-ION'fOrming part of Letters Patent No. 703,772, dated July 1, 1902.

f Application filed April '17, 1901.

To all whom it may concern:

Be it known thatI, STEPHEN A. DUYALL, a citizen of the United States of America, residing at Pen rith, in the county of Hancock and State of Vest Virginia, have invented certain new and usefulImprovements'in Railway-Switches, of which the followingisia. specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and usefulimprovements in railway-switches,and

has forits object to construct a switch which may be conveniently and effectually operated from a car or locomotive. V V

My invention, while applicable alike to street or steam railways, is herein shown and Will be described as employed in connection with a steam-railway, the switch-tongue and movable rail members being connected by levers to throwing deviceslocated at the sides of the track and adaptedto beoperatedby; mechanism carried by the locomotive, the particular construct-ion being.hereinafter re-. ferred to specifically and then particularly pointed out in the claim.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference will be employed to designate like parts throughout the different views of the drawings, in which- Figure 1 is'a top plan view of my improved switch. Fig.2 isa transverse vertical sectionalview of the same. Fig." 3 is a side elevation of the throwing means carried by the'locomotive,showin g the latterin dotted lines. Fig. 4 is a top plan View of a part of this mechanism. Fig. 5 is an end view thereof. Fig. 6 is a detail plan view of a part of the .rackbar adapted to be operated by the engineer for engagement with the switch throwing mechanism located at the side of'the track. Fig. 7 is a detail perspective view of a part of. the head-block which carries the rack-bar.

I will first describe the track ime'chanism' as illustrated in' Figs. 1 and2, in which 1 indicates the switch-tongue, and 2 the movable rail member. Connected to-the underneath face of the.switclptongueand the movable rail member is a switch-bar3, which extends outwardly to one side of the track and is connected at this outer end to an angle-plate 4,

Serial No. 56,233. (No model.)

pivotally mounted on a block or pedestal 5 at the side of the track.. The other arm or leg of this angle-plate is pivotally connected to one end of a lever 6, which has its other end rigidly connected to one end of a lever 7, that extendsacross the track underneath different directions and adapted to be engaged by the mechanism carried by the locomotive, the one of said arms being always inposition for engagement with said mechanism. The other end of the lever 7 is pivotallyconnected to a bell-crank 17 pivotally mounted on a pedestal 18, located at the opposite side of the track to the pedestal 12.

The other leg or arm of this bell-crank 17 is connected to one end: of a lever 19, which lever at its other end carries a pin 20, which engages in a slot 21, provided therefor in an arm 22, secured to -a barrel or sleeve 23, 1'0- tatably mounted on a shaft or rod 24, secured on a pedestal 25, located at the side of the track substantially inline with the pedestal 18. This sleeve or barrel 23 is held against elevation by a key 26, passed through the rod or shaft 24 above the sleeve or barrel, as aforedescribed for the barrel or sleeve 10. This sleeve or barrel carries an arm 27 to be engaged by the mechanism carried by the locomotive, as willbehereinafter described.

- To permit theengineer to throw the switch from the engine or locomotive, Imount at a suitable .point, ,preferably in front of the boiler, a head-block28, supported by brackets29 or'oth'er suitable means, this headbloclccarried on .itsUpper'face tO apertured "lugs 30, which. receive the operating rod or shaft 31 and'support the same at its outer end, this rod or shaft being extended into the cab of the locomotive and provided on its in ner end with an operating-wheel 32. The

head-block is provided in its upper face with a slot 33, opening at each end of the block in an aperture 34. Mounted in the slot or runway 33 is a rack-bar 35, the rack of which bar -is uppermost, so as to be engaged by a spur gear or pinion 36, that is secured on the shaft or rod 31 between the two lugs 30. The rotating of the rod or shaft 31 by means of the hand-wheel 32 causes the gear or pinion 36 to actuate the rack and move the same outwardly at one end of the head-block, according to the direction in which the shaft or rod 31 is rotated.

When it is desired to operate the switch, the engineer rotates the shaft or rod 31 so as to force the rack-bar outwardly to the desired side of the locomotive. For illustration we will assume that the train is passing to the left, the switch being in position shown in Fig. 1, and the train desires to pass onto the side track. The engineer operates the rod or shaft 31 so as to force the rack bar outwardly into position where it will engage with the arm- 15, thus moving this arm to the po sition shown in dotted lines in this view and moving the switch-tongue and movable rail member so as to open the switch, the parts assuming. the position in this operation as shown in dotted lines.

It will be observed that the switch may be readily operated by hand when desired and that when the switch is set in the correct position and the rack-bar is lying whollywith- .in the head-block the engine or locomotive will be free to pass the switch without e11- gagement of the rack-bar with the actuatingarms carried by the barrels or sleeves at the side of the track; w

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is- I In a railway-switch, the combination with the pivoted switch-tongue and the movable rail member, of a switch-bar connected to said tongue and rail member, a bell-crank- 4 to which said switch-bar is 'pivotally connected, a lever 7 extending underneath the rails of the track,a bell-crank 17 located at the opposite side of the track to the bellcrank 4 and to which the lever 7 is pivotally connected, a lever 6 connecting the bell-crank 4 with the lever 'Z, a link connecting said lever 7 with a rotatable sleeve mounted at the side of the track, an arm carriedby said sTEPI-IE A. DUvALL.

Witnesses: i

JOHN NOLAND, E. E. POTTER. 

